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The patent EP2649175 was granted to DSM Assets on Nov 29, 2017. The application was filed on Dec 8, 2011 under application number EP11794142A. The patent is currently recorded with a legal status of "Revoked".

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
| Company | Opposition Date | Representative | Opposition Status |
|---|---|---|---|
| DUPONT NUTRITION BIOSCIENCES APS | Aug 29, 2018 | D YOUNG | ADMISSIBLE |
| CSK FOOD ENRICHMENT | Aug 28, 2018 | HGF | WITHDRAWN |
| CHR HANSEN | Aug 20, 2018 | UEXKULL & STOLBERG | WITHDRAWN |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP0259739 |
| DESCRIPTION | WO0039281 |
| DESCRIPTION | WO2004065584 |
| DESCRIPTION | WO2005003327 |
| DESCRIPTION | WO2005080548 |
| DESCRIPTION | WO2009056979 |
| DESCRIPTION | WO9111509 |
| INTERNATIONAL-SEARCH-REPORT | US2005069862 |
| INTERNATIONAL-SEARCH-REPORT | US2007010003 |
| INTERNATIONAL-SEARCH-REPORT | WO2004065584 |
| INTERNATIONAL-SEARCH-REPORT | WO2009056979 |
| OPPOSITION | CN101028289 |
| OPPOSITION | CN101028290 |
| OPPOSITION | CN101219152 |
| OPPOSITION | JPS5071891 |
| OPPOSITION | US2005069862 |
| OPPOSITION | US2006204484 |
| OPPOSITION | US2007010003 |
| OPPOSITION | US4262023 |
| OPPOSITION | WO2004065584 |
| OPPOSITION | WO2005003327 |
| OPPOSITION | WO2005080548 |
| OPPOSITION | WO2009056979 |
| OPPOSITION | WO2011018509 |
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
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Appeal
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Appeal
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Appeal
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Appeal
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Search/Exam
Oct 18, 2017
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(Electronic) Receipt
Search/Exam
Oct 16, 2017
Filing of the translations of the claims
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French translation of claims
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Oct 16, 2017
Letter accompanying subsequently filed items
Search/Exam
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Intention to grant (signatures)
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Jun 23, 2017
Text intended for grant (clean copy)
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Jun 23, 2017
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(Electronic) Receipt
Search/Exam
Feb 3, 2017
Amended claims with annotations
Search/Exam
Feb 3, 2017
Amended description with annotations
Search/Exam
Feb 3, 2017
Claims
Search/Exam
Feb 3, 2017
Description
Search/Exam
Feb 3, 2017
Letter accompanying subsequently filed items
Search/Exam
Feb 3, 2017
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Annex to the communication
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Jan 18, 2017
Consultation by telephone/in person
Search/Exam
Jan 18, 2017
Oct 7, 2016
Annex to the communication
Search/Exam
Oct 7, 2016
Communication from the Examining Division
Search/Exam
Sep 24, 2015
(Electronic) Receipt
Search/Exam
Sep 24, 2015
Amended claims with annotations
Search/Exam
Sep 24, 2015
Claims
Search/Exam
Sep 24, 2015
Letter accompanying subsequently filed items
Search/Exam
Sep 24, 2015
Jul 16, 2015
Annex to the communication
Search/Exam
Jul 16, 2015
Communication from the Examining Division
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Jul 6, 2015
Examination started
Search/Exam
Jan 5, 2015
Refund of fees
Search/Exam
Nov 26, 2014
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(Electronic) Receipt
Search/Exam
Jan 9, 2014
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Amended claims with annotations
Search/Exam
Jan 9, 2014
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Search/Exam
Jan 9, 2014
Letter accompanying subsequently filed items
Search/Exam
Sep 18, 2013
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Communication to designated inventor
Search/Exam
Jul 10, 2013
Priority search results copy provided by EPO
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Jul 10, 2013
Priority search results copy provided by EPO
Search/Exam
Jun 26, 2013
May 14, 2013
(Electronic) Receipt
Search/Exam
May 14, 2013
Request for entry into the European phase
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Apr 19, 2013
Information on entry into European phase
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Jul 3, 2012
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Copy of the international search report
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Jun 14, 2012
Published international application - A1
Search/Exam
Mar 15, 2012
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Dec 8, 2011
(Electronic) Receipt
PCTRO
Dec 8, 2011
Abstract
PCTRO
Dec 8, 2011
Claims
PCTRO
Dec 8, 2011
Description
PCTRO
Dec 8, 2011
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